X.25 Packet Properties

Default packet size

Defines the preferred or default maximum X.25 packet. The default is 128 bytes. You can specify different values for Transmit and Receive defaults.

Maximum packet size

Determines the negotiated maximum packet size. You can specify different values for Transmit and Receive.

Default window size

Configures a window-size preference. The default is 7, and the range is 1 to 7 for modulo 8 and 1 to 127 for modulo 128. You can specify different values for Transmit and Receive defaults.

Maximum window size

Determines the largest window size to agree to in negotiations. The default is 7. The range is 2 to 7 for modulo 8 and 2 to 127 for modulo 128 sequencing. You can specify different Transmit and Receive maximums.

Data packet concatenation limit

Defines the maximum length of data units passed from the adapter to the host computer. The adapter concatenates incoming packets with the more-data bit set into a single data unit. Setting a maximum length prevents buffer depletion: when the maximum is exceeded, concatenation stops and the data unit is passed to the host computer, which then performs the concatenation.